Figure REF  c) presents the RMSE errors for different number of input points for both types. The results confirm the initial assumption that sampling from a dense depth map results in better performance. Moreover, we notice that the proposed method obtains higher accuracy compared to NLSPN [1]} with all point sets. In fact, we obtain similar performance using COLMAP points as NLSPN [1]} using points from the dense depth map. Figure REF  shows qualitative comparison with NLSPN [1]}.
